Deer pretty much do what they want unless you build a very high fence they cannot jump over. A fence will also keep rabbits and ground hogs out.
We had ground hogs burrowing under our front porch (concrete slab). We tried moth crystals blown down the holes and fox urine (no effect), loud music piped down the hole, filling the holes with crushed stone and concrete (they just dug a new entrance holes), .22 use (got a couple) and have a heart traps (we let them go miles from here, but new ones always took their place).
This went on for years. Once in a while a skunk would decide to invade the burrow and we were treated to that wonderful smell in our basement.
If you want them removed professionally, it will cost you about $250 a pop.
Look into a con-a-bear trap if you want lasting results. Obviously, you have to keep household pets, children, etc. away from it. Then fill all the holes with crushed stone and concrete. Wash, rinse, repeat as needed.
We don't have them here in New Mexico, but I was wondering if burying heavy wire mesh around foundations and such would work?
We have deer, coyotes, jack rabbits, raccoons, etc. Everything stays clear of the garden because of our chronic fatigued hound dog, except ground squirrels which we trap and shoot. Trap and release doesn't work because animals will travel miles to get back to their home territory.
Bear in mind, we have not closed yet and these observations are from short visits we make in passing. We may also have raccoons and/or bunnies for all I know.